package com.cmcc.he.cz;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.util.Log;

public class UpdateActivity extends Activity {
	private static final String TAG = "Update";
	public ProgressDialog pBar;
	private Handler handler = new Handler();

	private int newVerCode = 0;
	private String newVerName = "";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.update);
		
		if (getServerVerCode()) {
			int vercode = Config.getVerCode(this);
			if (newVerCode > vercode) {
				doNewVersionUpdate();
			} else {
				notNewVersionShow();
			}
		}

	}

	private boolean getServerVerCode() {
		try {
			String verjson = NetworkTool.getContent(Config.UPDATE_SERVER
					+ Config.UPDATE_VERJSON);
			JSONArray array = new JSONArray(verjson);
			if (array.length() > 0) {
				JSONObject obj = array.getJSONObject(0);
				try {
					newVerCode = Integer.parseInt(obj.getString("verCode"));
					newVerName = obj.getString("verName");
				} catch (Exception e) {
					newVerCode = -1;
					newVerName = "";
					return false;
				}
			}
		} catch (Exception e) {
			Log.e(TAG, e.getMessage());
			return false;
		}
		return true;
	}

	private void notNewVersionShow() {  
	    int verCode = Config.getVerCode(this);  
	    String verName = Config.getVerName(this);  
	    StringBuffer sb = new StringBuffer();  
	    sb.append("当前版本:");  
	    sb.append(verName);  
	    sb.append(" Code:");  
	    sb.append(verCode);  
	    sb.append("\n已是最新版,无需更新!");  
	    Dialog dialog = new AlertDialog.Builder(UpdateActivity.this).setTitle("软件更新")  
	            .setMessage(sb.toString())// 设置内容  
	            .setPositiveButton("确定",// 设置确定按钮  
	                    new DialogInterface.OnClickListener() {  
	                        @Override  
	                        public void onClick(DialogInterface dialog,  
	                                int which) {  
	                            finish();  
	                        }  
	                    }).create();// 创建  
	    // 显示对话框  
	    dialog.show();  
	}  

	private void doNewVersionUpdate() {  
	    int verCode = Config.getVerCode(this);  
	    String verName = Config.getVerName(this);  
	    StringBuffer sb = new StringBuffer();  
	    sb.append("当前版本:");  
	    sb.append(verName);  
	    sb.append(" Code:");  
	    sb.append(verCode);  
	    sb.append(", 发现新版本:");  
	    sb.append(newVerName);  
	    sb.append(" Code:");  
	    sb.append(newVerCode);  
	    sb.append(", 是否更新?");  
	    Dialog dialog = new AlertDialog.Builder(UpdateActivity.this)  
	            .setTitle("软件更新")  
	            .setMessage(sb.toString())  
	            // 设置内容  
	            .setPositiveButton("更新",// 设置确定按钮  
	                    new DialogInterface.OnClickListener() {  
	                        @Override  
	                        public void onClick(DialogInterface dialog,  
	                                int which) {  
	                            pBar = new ProgressDialog(UpdateActivity.this);  
	                            pBar.setTitle("正在下载");  
	                            pBar.setMessage("请稍候...");  
	                            pBar.setProgressStyle(ProgressDialog.STYLE_SPINNER);  
	                            downFile(Config.UPDATE_SERVER + Config.UPDATE_APKNAME);  
	                        }  
	                    })
	            .setNegativeButton("暂不更新",  
	                    new DialogInterface.OnClickListener() {  
	                        public void onClick(DialogInterface dialog,  
	                                int whichButton) {  
	                            // 点击"取消"按钮之后退出程序  
	                            finish();  
	                        }  
	                    }).create();// 创建  
	    // 显示对话框  
	    dialog.show();  
	}  

	void downFile(final String url) {
		pBar.show();
		new Thread() {
			public void run() {
				HttpClient client = new DefaultHttpClient();
				HttpGet get = new HttpGet(url);
				HttpResponse response;
				try {
					response = client.execute(get);
					HttpEntity entity = response.getEntity();
					long length = entity.getContentLength();
					InputStream is = entity.getContent();
					FileOutputStream fileOutputStream = null;
					if (is != null) {

						File file = new File(
								Environment.getExternalStorageDirectory(),
								Config.UPDATE_SAVENAME);
						fileOutputStream = new FileOutputStream(file);

						byte[] buf = new byte[1024];
						int ch = -1;
						//int count = 0;
						while ((ch = is.read(buf)) != -1) {
							fileOutputStream.write(buf, 0, ch);
							//count += ch;
							if (length > 0) {
							}
						}

					}
					fileOutputStream.flush();
					if (fileOutputStream != null) {
						fileOutputStream.close();
					}
					down();
				} catch (ClientProtocolException e) {
					e.printStackTrace();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}

		}.start();

	}

	void down() {
		handler.post(new Runnable() {
			public void run() {
				pBar.cancel();
				update();
			}
		});

	}

	void update() {

		Intent intent = new Intent(Intent.ACTION_VIEW);
		intent.setDataAndType(Uri.fromFile(new File(Environment
				.getExternalStorageDirectory(), Config.UPDATE_SAVENAME)),
				"application/vnd.android.package-archive");
		startActivity(intent);
	}

}